Under price discrimination, a monopolist equates the marginal cost with the average revenues in different markets

Which of the following graphical representations can be used most appropriately to show the distribution of a household's income, in terms of percentages, among the various categories of expenses?

A) A bar chart B) A time-series graph C) A pie chart D) A histogram chart

Firms are "price makers" if they

A) have sufficient market power to set their product price. B) make the market price their product price. C) make their product price competitive. D) None of the above